Elon states that to accelerate the advent of sustainable energy, there must be scale. "We've got to transition a vast economy that is currently overly dependent on fossil fuels to a sustainable energy economy."

Energy must be sustainably generated with wind, solar, hydro, geothermal and nu...

• In the form of heat and light, solar energy can cover all our energy needs in a clean, versatile manner.
• Photovoltaics, or Solar panels with silicon cells, convert light into electricity as the photon rays of the sun charge up the cells.

Electricity can light your lamps or power your appliances. But electricity needs to be produced first. We need a fuel that can be converted into electricity, such as petroleum (carbohydrates) that is converted into gasoline (glucose). Or solar energy (fats) or wind power (protein...